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obturator    
n. 闭塞物,闭塞具,密闭装置

闭塞物,闭塞具,密闭装置

obturator
n 1: a prosthesis used to close an opening (as to close an
opening of the hard palate in cases of cleft palate)

Obturator \Ob"tu*ra`tor\, n. [NL., fr. L. obturare to stop up:
cf. F. obturateur.]
1. That which closes or stops an opening.
[1913 Webster]

2. (Surg.) An apparatus designed to close an unnatural
opening, as a fissure of the palate.
[1913 Webster]

3. (Ordnance) Any device for preventing the escape of gas
through the breech mechanism of a breech-loading gun; a
gas check.
[Webster 1913 Suppl.]

4. (Photog.) A camera shutter.
[Webster 1913 Suppl.]


Obturator \Ob"tu*ra`tor\, a. (Anat.)
Serving as an obturator; closing an opening; pertaining to,
or in the region of, the obturator foramen; as, the obturator
nerve.
[1913 Webster]

{Obturator foramen} (Anat.), an opening situated between the
public and ischial parts of the innominate bone and closed
by the obturator membrane; the thyroid foramen.
[1913 Webster]


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